CN110530044B - High-efficient refrigeration plant of carbon dioxide - Google Patents
High-efficient refrigeration plant of carbon dioxide Download PDFInfo
- Publication number
- CN110530044B CN110530044B CN201910917411.XA CN201910917411A CN110530044B CN 110530044 B CN110530044 B CN 110530044B CN 201910917411 A CN201910917411 A CN 201910917411A CN 110530044 B CN110530044 B CN 110530044B
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- liquid
- condenser
- liquefied
- carbon dioxide
- gas
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 64
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 64
- 238000005057 refrigeration Methods 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 120
- 238000001816 cooling Methods 0.000 claims abstract description 19
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 79
- 229910021529 ammonia Inorganic materials 0.000 claims description 37
- 230000005494 condensation Effects 0.000 claims description 17
- 238000009833 condensation Methods 0.000 claims description 17
- 239000000110 cooling liquid Substances 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 abstract description 6
- 238000005507 spraying Methods 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Carbon And Carbon Compounds (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention discloses a high-efficiency carbon dioxide refrigeration device which comprises a carbon dioxide refrigeration system and a cooling system, wherein an evaporator, a CO 2 compressor, a filter and a condenser are arranged in the carbon dioxide refrigeration system, the evaporator, the CO 2 compressor, the filter and the condenser are sequentially communicated through pipelines, a controller is arranged outside the carbon dioxide refrigeration system and the cooling system, and a semi-liquid semi-gas type automatic control condensing device is arranged in the condenser. The condenser is internally provided with the spiral coil type condensing tube, so that the carbon dioxide can be cooled rapidly and effectively, and the liquefied CO 2 storage box is arranged below the condensing tube, so that the condensed carbon dioxide is changed into liquid, the condenser directly discharges the liquid carbon dioxide, and the gas-liquid separation is performed in the condenser, thereby saving the structure of refrigeration equipment; the liquefied carbon dioxide is conveyed to the upper end of the condensing pipe through the secondary condensing liquid pump for spraying, so that the cooling efficiency of the carbon dioxide is effectively improved.
Description
Technical Field
The invention relates to a high-efficiency refrigeration device for carbon dioxide.
Background
Carbon dioxide is taken as a natural working medium, and is an important research direction for replacing CFCs working media at present. The superiority of using carbon dioxide as a refrigerant, and using a transcritical cycle, is described in terms of the relevant thermophysical and chemical properties of carbon dioxide as a refrigerant, and the carbon dioxide refrigeration cycle. The key equipment of the carbon dioxide refrigeration cycle system is introduced to be the research progress conditions of a compressor, an expander, a gas condenser and an evaporator, and the application of an automobile air conditioner and a heat pump system adopting carbon dioxide as a refrigerant is reviewed to indicate the development direction of future research.
In a high-efficiency carbon dioxide refrigerating system disclosed in a patent CN201610650314.5, the condition that the existing carbon dioxide is low in refrigerating efficiency is solved by matching the refrigerant injector, the compressor, the gas condenser, the heat regenerator, the gas-liquid separator and the evaporator, and the flowmeter, the pressure sensor and the temperature sensor which are arranged in the pipeline, and matching the pressure sensor, the temperature sensor, the second A/D converter, the pressure comparator, the temperature comparator and the microprocessor, so that the refrigerating time of the carbon dioxide is shortened, the working efficiency is better improved, and the rapid refrigerating of the carbon dioxide is ensured; through the first manual control switch, the second manual control switch and the third manual control switch that are provided with, microprocessor's output is connected with audible-visual annunciator's input to and central controller's output is connected with the input of display, has changed traditional carbon dioxide refrigerating system simple structure, has improved carbon dioxide refrigerating system's functionality, better convenience of use's use has improved the efficiency of use.
However, in the process of cooling carbon dioxide, gas-liquid separation is required, and after the gas-liquid separation, the liquefied carbon dioxide can be cooled, which results in too complex cooling structure and failure to quickly obtain the liquefied carbon dioxide.
Disclosure of Invention
The invention aims to solve the problems, and designs the high-efficiency carbon dioxide refrigeration equipment which has the functions of good liquefaction effect and high refrigeration efficiency, and the liquid level sensor, the temperature sensor and the air pressure sensor are arranged in the condenser, so that the carbon dioxide is directly liquefied in the evaporator, gas-liquid separation is not needed, the carbon dioxide is directly discharged from the condenser in a liquid mode, the refrigeration efficiency is effectively improved, and meanwhile, the high-temperature carbon dioxide in the condenser can be cooled by the liquefied carbon dioxide in a double way, so that the cooling efficiency of the carbon dioxide is effectively improved.
The technical scheme includes that the high-efficiency carbon dioxide refrigeration equipment comprises a carbon dioxide refrigeration system and a cooling system, wherein an evaporator, a CO 2 compressor, a filter and a condenser are arranged in the carbon dioxide refrigeration system, the evaporator, the CO 2 compressor, the filter and the condenser are sequentially communicated through pipelines, a controller is arranged outside the carbon dioxide refrigeration system and the cooling system, and a semi-liquid semi-gas automatic control condensing device is arranged in the condenser;
The semi-liquid and semi-gas type automatic control condensing device comprises a cooling liquid outlet pipe arranged above the outer side surface of a condenser, a cooling liquid inlet pipe arranged below the inner side surface of the condenser, a high-pressure gas inlet pipe arranged above the condenser, a gas pressure detection pipe arranged at one end of the high-pressure gas inlet pipe, a gas pressure sensor arranged on the gas pressure detection pipe, a high-pressure electromagnetic valve arranged on the high-pressure gas inlet pipe, a plurality of condensing pipes arranged below the high-pressure gas inlet pipe, the condensing pipes are fixedly connected with the condenser, the condensing pipes are uniformly distributed in the condenser, a liquefied CO 2 storage box arranged below the inner side of the condenser, the liquefied CO 2 storage box is fixedly connected with the condensing pipes, a liquefied CO 2 discharge pipe arranged at the center of the lower surface of the liquefied CO 2 storage box, a liquefied CO 2 discharge pipe is fixedly connected with the condenser, a high-pressure electromagnetic valve arranged on the CO 2 discharge pipe, a secondary condensing box arranged at one side below the liquefied CO 2 storage box, a secondary condensing pipe arranged at one side of the liquefied CO 2, a secondary condensing pipe arranged at the side of the liquefied CO gas inlet pipe, a spray head arranged at the other side of the liquefied CO storage box, a plurality of the liquefied CO storage box is fixedly connected with the liquid inlet pipe, a spray head arranged at one end of the liquefied CO storage pipe, the liquefied CO storage box is fixedly connected with the liquid inlet pipe, the liquid pump is fixedly arranged at the liquid inlet pipe, and the liquid inlet pipe, the liquid storage pipe is respectively arranged at the liquid inlet pipe, and the liquid inlet pipe is fixedly connected with the liquid inlet pipe and the liquid inlet pipe. And a liquid level sensor is arranged on one side of the upper surface inside the liquefied CO 2 storage box.
The cooling system comprises an ammonia gas-liquid separator, an ammonia single-machine double-stage compressor, an oil-gas separator, an ammonia condenser and an ammonia liquid reservoir, wherein the ammonia gas-liquid separator, the ammonia single-machine double-stage compressor, the oil-gas separator, the ammonia condenser and the ammonia liquid reservoir are sequentially communicated through pipelines.
The ammonia gas-liquid separator is fixedly connected with the cold cutting liquid outlet pipe, and the ammonia liquid reservoir is fixedly connected with the cooling liquid inlet pipe.
The filter is fixedly connected with the high-pressure gas inlet pipe, and the evaporator is fixedly connected with the liquefied CO 2 discharge pipe.
The liquid inlet pipe and the liquid outlet pipe are respectively and fixedly connected with the secondary condensing box.
The liquefied CO 2 storage tank maintains the liquefied CO 2 within a constant liquid level range.
The condenser tube is formed by a single spiral coil.
And a heat preservation shell is arranged outside the condenser.
The invention discloses a high-efficiency carbon dioxide refrigeration device manufactured by utilizing the technical scheme of the invention:
According to the refrigeration equipment, the spiral coil type condensation pipe is arranged in the condenser, so that the flow of carbon dioxide is increased, the carbon dioxide can be cooled rapidly and effectively, the condensation efficiency is improved, the liquefied CO 2 storage box is arranged below the condensation pipe, the condensed carbon dioxide is changed into liquid to be stored, the condenser is used for directly discharging liquid carbon dioxide, and the gas-liquid separation is carried out in the condenser, so that the structure of the refrigeration equipment is effectively saved;
This refrigeration plant, the upper end that carries the condenser pipe is led to the carbon dioxide that will liquefy through the secondary condensation liquid pump sprays to make liquefied carbon dioxide and high temperature carbon dioxide gas contact, thereby carry out condensation high temperature carbon dioxide gas through the dual cooling of condensate and liquefied carbon dioxide, thereby effectually promoted the cooling efficiency of carbon dioxide, make the refrigerating effect of device better.
Drawings
FIG. 1 is a schematic diagram of a carbon dioxide efficient refrigeration apparatus according to the present invention;
FIG. 2 is a schematic diagram of a semi-liquid semi-gas automatically controlled condensing unit according to the present invention;
FIG. 3 is a side view of a semi-liquid semi-gas automatically controlled condensing unit according to the present invention;
FIG. 4 is a schematic view of a spray head according to the present invention;
In the figure, 1, a carbon dioxide refrigerating system; 2. a cooling system; 3. an evaporator; 4. a CO 2 compressor; 5. a filter; 6. a condenser; 7. a controller; 8. a cooling liquid outlet pipe; 9. a cooling liquid inlet pipe; 10. high pressure gas inlet pipe; 11. an air pressure detecting tube; 12. an air pressure sensor; 13. a high pressure electromagnetic air valve; 14. a condensing tube; 15. liquefied CO 2 storage tanks; 16. a liquefied CO 2 discharge line; 17. a high pressure solenoid valve; 18. a secondary condensing box; 19. a secondary condensing liquid pump; 20. a liquid inlet pipe; 21. a liquid outlet pipe; 22. a liquid branch pipe; 23. a spray nozzle; 24. a temperature sensor; 25. a liquid level sensor; 26. an ammonia gas-liquid separator; 27. ammonia single-machine two-stage compressor; 28. an oil-gas separator; 29. an ammonia condenser; 30. an ammonia gas reservoir; 31. and (5) a heat preservation shell.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, as shown in fig. 1 to 4, in which:
In the device, the device is powered by being connected with an external power supply, the external power supply is electrically connected with a controller 2, a CO 2 compressor 4, a high-pressure electromagnetic valve 13, a high-pressure electromagnetic valve 17 and an ammonia single-machine double-stage compressor 27, the model of the controller 2 is a PLC controller of YHC2-30T-AC model, the control signal output end of the controller 2 is electrically connected with the CO 2 compressor 4, the high-pressure electromagnetic valve 13, the high-pressure electromagnetic valve 17 and the ammonia single-machine double-stage compressor 27 respectively through transistors, and the signal receiving end of the controller 2 is electrically connected with an air pressure sensor 12, a temperature sensor 24 and a liquid level sensor 25, so that the operation of the whole device is controlled.
The application has the technical points that the semi-liquid semi-gas type automatic control condensing device comprises a cooling liquid outlet pipe 8 arranged above the outer side surface of a condenser 6, a cooling liquid inlet pipe 9 arranged below the outer side surface of the condenser 6, a high-pressure gas inlet pipe 10 arranged above the condenser 6, a gas pressure detection pipe 11 arranged at one end of the high-pressure gas inlet pipe 10, a gas pressure sensor 12 arranged on the gas pressure detection pipe 11, a high-pressure gas valve 13 arranged on the high-pressure gas inlet pipe 10, a plurality of condensing pipes 14 arranged below the high-pressure gas inlet pipe 10, The condenser tube 14 is fixedly connected with the condenser 6, the condenser tube 14 is uniformly distributed in the condenser 6, the liquefied CO 2 storage box 15 is arranged below the inner part of the condenser 6, the liquefied CO 2 storage box 15 is fixedly connected with the condenser tube 14, the center of the lower surface of the liquefied CO 2 storage box 15 is provided with a liquefied CO 2 discharge pipe 16, The liquefied CO 2 discharge pipe 16 is fixedly connected with the condenser 6, a high-pressure electromagnetic valve 17 is arranged on the liquefied CO 2 discharge pipe 16, a secondary condensing tank 18 is arranged on one side below the liquefied CO 2 storage tank 15, a secondary condensing liquid pump 19 is arranged in the secondary condensing tank 18, A liquid inlet pipe 20 is arranged at the liquid inlet end of the secondary condensation liquid pump 19, the liquid inlet pipe 20 is fixedly connected with the lower surface of the liquefied CO 2 storage tank 15, a liquid outlet pipe 21 is arranged at the liquid outlet end of the secondary condensation liquid pump 19, a plurality of liquid branch pipes 22 are arranged on the liquid outlet pipe 21, the liquid branch pipes 22 are respectively fixedly connected with the upper ends of the side surfaces of the condensation pipes 14, a spray nozzle 23 is arranged at one end of each liquid branch pipe 22, the spray nozzle 23 is positioned in the condensation pipes 14, a temperature sensor 24 is arranged on the lower surface of the inside of the liquefied CO 2 storage tank 15, a liquid level sensor 25 is arranged on one side of the upper surface inside the liquefied CO 2 storage tank 15, and the condensing pipe 14 is formed by a single spiral coil; The contact time and the contact area of the high-temperature and high-pressure carbon dioxide and the cooling medium can be effectively increased through the spiral coil type condenser tube 14, so that the cooling speed of the carbon dioxide can be improved, and the liquefied CO 2 storage tank 15 is used for storing part of liquefied carbon dioxide, so that the liquefied CO 2 discharge tube 16 is effectively ensured to only discharge the liquefied carbon dioxide, The gas-liquid separation is effectively avoided, so that the structure of refrigeration equipment is saved, and the cooled liquid carbon dioxide is sprayed into the condensation pipe 14 through the secondary condensation liquid pump 19, so that the high-temperature carbon dioxide gas in the condensation pipe 14 can be cooled by the double cooling of condensate and liquefied carbon dioxide, the cooling of the high-temperature carbon dioxide gas is accelerated, the working efficiency of the condenser 6 is improved, and the refrigeration efficiency is improved.
The working principle of the device is as follows: when refrigeration is needed, the ammonia single-stage and double-stage compressor 27 is controlled to start working, the ammonia single-stage and double-stage compressor 27 compresses low-temperature and low-pressure ammonia to obtain high-temperature and high-pressure ammonia, the high-temperature and high-pressure ammonia enters the oil-gas separator 28 and then the oil-gas separator 28 separates the oil bodies mixed in the ammonia, so that the low-temperature and high-pressure ammonia enters the ammonia condenser 29, and the high-temperature and high-pressure ammonia enters the ammonia condenser 29 to be condensed, so that low-temperature and high-pressure ammonia is obtained;
The ammonia gas with low temperature and high pressure is condensed into liquid which enters the ammonia gas liquid reservoir 30 for storage, and the ammonia gas liquid is conveyed to the cooling liquid inlet pipe 9 by the air pressure of the ammonia gas with high temperature and high pressure so as to enter the condenser 6;
Simultaneously, the CO 2 compressor 4 is controlled to start working, the CO 2 compressor 4 compresses low-temperature low-pressure CO 2 gas into high-temperature high-pressure CO 2 gas, the high-temperature high-pressure CO 2 gas enters the filter 5 to be dried, so that moisture in the high-temperature high-pressure CO 2 gas is removed, the high-pressure gas enters the condenser pipe 14 through the high-pressure gas inlet pipe 10, the high-temperature high-pressure CO 2 gas contacts with the pipe wall of the condenser pipe 14 through flowing in the condenser pipe 14 to cool, the condenser pipe 14 contacts with ammonia liquid in the condenser 6, heat transfer is carried out through the condenser pipe 14, the high-temperature high-pressure CO 2 gas is changed into low-temperature high-pressure CO 2 gas, and when the temperature of the CO 2 gas is lower than a critical value, the CO 2 gas is converted into CO 2 liquid, and the CO 5365 gas enters the liquefied CO 2 storage tank 15 through the condenser pipe 14;
The CO 2 liquid is stored in the liquefied CO 2 storage tank 15, and the secondary condensation liquid pump 19 is controlled to start working, the secondary condensation liquid pump 19 pumps CO 2 liquid from the liquefied CO 2 storage tank 15 through the liquid inlet pipe 20, so that the CO 2 liquid enters the liquid branch pipe 22 through the liquid outlet pipe 21 and is sprayed to the upper end in the condensation pipe 14 through the spray nozzle 23 on the liquid branch pipe 22, the sprayed CO 2 liquid is contacted with high-temperature and high-pressure CO 2 gas, and the CO 2 gas is cooled again;
When the device works for a certain time, the liquid level of CO 2 liquid in the liquefied CO 2 storage tank 15 rises to a certain degree, and when the liquid level sensor 25 detects that the liquid level of CO 2 liquid reaches a set value, the high-pressure solenoid valve 17 is controlled to be opened, CO 2 liquid is discharged through the liquefied CO 2 discharge pipe, liquefied CO 2 enters the evaporator 3 and exchanges heat with external air, so that liquefied CO 2 is changed into low-temperature CO 2 gas again, and low-temperature CO 2 gas is changed into high-temperature and high-pressure CO 2 gas through recompression of the CO 2 compressor 4 to carry out circulating refrigeration;
In the process of circulating refrigeration, the temperature of the CO 2 liquid is detected by the temperature sensor 24, so that the refrigeration effect of the evaporator 3 can be controlled by adjusting the temperature of the CO 2 liquid, and meanwhile, the air pressure inside the high-pressure air inlet pipe 10 is detected by the air pressure sensor 12, so that the air pressure inside the condensing pipe 14 is controlled to be in a constant state by opening and closing the high-pressure electromagnetic air valve 13, and the continuous operation of the condenser 6 is ensured;
Meanwhile, in the cyclic support process, when the liquefied CO 2 storage tank 15 discharges CO 2 liquid each time, the liquid level is detected by the liquid level sensor 25, when the liquid level reaches the highest set value, the CO 2 liquid is controlled to be discharged, when the liquid level reaches the lowest set value, the CO 2 liquid is controlled to stop discharging, and the CO 2 liquid is ensured to be stored in the liquefied CO 2 storage tank 15 all the time, so that the secondary condensation liquid pump 19 can perform double cooling of high-temperature and high-pressure CO 2 gas, and meanwhile, the CO 2 gas is prevented from being discharged into the evaporator 3 to influence the working efficiency of the evaporator 3.
The above technical solution only represents the preferred technical solution of the present invention, and some changes that may be made by those skilled in the art to some parts of the technical solution represent the principles of the present invention, and the technical solution falls within the scope of the present invention.
Claims (3)
1. The utility model provides a high-efficient refrigeration plant of carbon dioxide, includes carbon dioxide refrigerating system (1) and cooling system (2), carbon dioxide refrigerating system (1) inside is equipped with evaporimeter (3), CO 2 compressor (4), filter (5) and condenser (6), evaporimeter (3), CO 2 compressor (4), filter (5) and condenser (6) are linked together through the pipeline in proper order, carbon dioxide refrigerating system (1) and cooling system (2) are equipped with controller (7) outward, its characterized in that, the inside semi-liquid semi-gas type automatic control condensing equipment that is equipped with of condenser (6);
The semi-liquid and semi-gas type automatic control condensing device comprises a cooling liquid outlet pipe (8) arranged above the outer side surface of a condenser (6), a cooling liquid inlet pipe (9) arranged below the outer side surface of the condenser (6), a high-pressure gas inlet pipe (10) arranged above the condenser (6), a gas pressure detection pipe (11) arranged at one end of the high-pressure gas inlet pipe (10), a gas pressure sensor (12) arranged on the gas pressure detection pipe (11), a high-pressure magnetic valve (13) arranged on the high-pressure gas inlet pipe (10), a plurality of condensing pipes (14) arranged below the high-pressure gas inlet pipe (10), the condensing pipes (14) are fixedly connected with the condenser (6), The condensing pipes (14) are uniformly distributed in the condenser (6), a liquefied CO 2 storage box (15) is arranged below the inner part of the condenser (6), the liquefied CO 2 storage box (15) is fixedly connected with the condensing pipes (14), a liquefied CO 2 discharge pipe (16) is arranged at the center of the lower surface of the liquefied CO 2 storage box (15), The liquefied CO 2 discharge pipe (16) is fixedly connected with the condenser (6), a high-pressure electromagnetic valve (17) is arranged on the liquefied CO 2 discharge pipe (16), a secondary condensing tank (18) is arranged on one side below the liquefied CO 2 storage tank (15), The secondary condensing tank (18) is internally provided with a secondary condensing liquid pump (19), a liquid inlet pipe (20) is arranged at the liquid inlet end of the secondary condensing liquid pump (19), the liquid inlet pipe (20) is fixedly connected with the lower surface of the liquefied CO 2 storage tank (15), the liquid outlet end of the secondary condensing liquid pump (19) is provided with a liquid outlet pipe (21), the liquid outlet pipe (21) is provided with a plurality of liquid branch pipes (22), the liquid branch pipes (22) are respectively fixedly connected with the upper ends of the side surfaces of the condensing pipes (14), a spray nozzle (23) is arranged at one end of the liquid branch pipe (22), the spray nozzle (23) is positioned in the condenser pipe (14), a temperature sensor (24) is arranged on the lower surface of the inside of the liquefied CO 2 storage box (15), and a liquid level sensor (25) is arranged on one side of the upper surface of the inside of the liquefied CO 2 storage box (15);
The cooling system (2) comprises an ammonia gas-liquid separator (26), an ammonia single-stage compressor (27), an oil-gas separator (28), an ammonia condenser (29) and an ammonia liquid reservoir (30), wherein the ammonia gas-liquid separator (26), the ammonia single-stage compressor (27), the oil-gas separator (28), the ammonia condenser (29) and the ammonia liquid reservoir (30) are sequentially communicated through pipelines, the ammonia gas-liquid separator (26) is fixedly connected with a cooling liquid outlet pipe (8), the ammonia liquid reservoir (30) is fixedly connected with a cooling liquid inlet pipe (9), a filter (5) is fixedly connected with a high-pressure gas inlet pipe (10), the evaporator (3) is fixedly connected with a liquefied CO 2 discharge pipe (16), the liquid inlet pipe (20) and the liquid outlet pipe (21) are respectively fixedly connected with a secondary condensation tank (18), and a liquefied CO 2 storage tank (15) keeps liquefied CO 2 within a constant liquid level range.
2. A carbon dioxide efficient refrigeration apparatus according to claim 1, wherein the condenser tube (14) is constituted by a single spiral coil.
3. A carbon dioxide efficient refrigeration apparatus according to claim 1, characterized in that the condenser (6) is externally provided with a heat-insulating shell (31).
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| CN201910917411.XA CN110530044B (en) | 2019-09-26 | 2019-09-26 | High-efficient refrigeration plant of carbon dioxide |
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| CN201910917411.XA CN110530044B (en) | 2019-09-26 | 2019-09-26 | High-efficient refrigeration plant of carbon dioxide |
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| CN110530044A CN110530044A (en) | 2019-12-03 |
| CN110530044B true CN110530044B (en) | 2024-07-12 |
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| CN111703274B (en) * | 2020-03-09 | 2021-09-07 | 西安交通大学 | A Transcritical CO2 Vehicle Thermal Management System and Its Optimal Charge Calibration Method |
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| CN210718189U (en) * | 2019-09-26 | 2020-06-09 | 山东神舟制冷设备有限公司 | High-efficient refrigeration plant of carbon dioxide |
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| KR200197819Y1 (en) * | 2000-05-10 | 2000-09-15 | 이명섭 | Air conditioner outdoor units |
| CN103925737A (en) * | 2014-05-06 | 2014-07-16 | 北京德能恒信科技有限公司 | Air conditioner system with evaporation type condenser |
| CN204358988U (en) * | 2014-11-14 | 2015-05-27 | 武汉新世界制冷工业有限公司 | ammonia and carbon dioxide indirect refrigeration system |
| CN105135733B (en) * | 2015-08-31 | 2017-08-29 | 黑龙江爱科德科技有限公司 | Half full-liquid type carbon dioxide refrigerating system |
| CN209013516U (en) * | 2018-11-19 | 2019-06-21 | 新疆深冷气体有限公司 | A kind of full-automatic carbon dioxide Two-stage refrigerating system |
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| CN210718189U (en) * | 2019-09-26 | 2020-06-09 | 山东神舟制冷设备有限公司 | High-efficient refrigeration plant of carbon dioxide |
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